Apparatus for recovering hydrocarbons from absorbing-oils.



. F. PUMNG. APPARATUS FOR'RECOVERING HYDROCARBONS FROM ABSORBING OILS.

' ArPplcAnon FILED OCT. 29. 1913.

Patented Mar; 21, 1916.

5 SHEETSSHEET I.

Y F. PUNING. APPARATUS FORRECOVERING HYDROCARBONS FROM ABSORBING OILS.

APPLICATION FILED OCT. 20, I913- Patented Mar. 21 1916.

.5 SHEETS-SHEET a.

WES/f OIL OUTLET E m w 0 m L N 2 N L/ a 0 b m w m m OUTLET \w w m m F. PUNING. APPARATUS FOR RECOVERING H YDROCARBONS FROM ABSORBING OILS.

APPLICATION FILED 00120. 1913. V 1,176,094. Patented Mar. 21, 1916. I 5 SHEETSSHEEI 4.

N 0/1. INLET E yf/irsa was .ywerd r W INLET rm 5 F. PUNING. APPARATUS FORTRECOVERING HYDROCARBONS FROM ABSORBING OlLS.

APPLICATION FILED OCT. 20, 1913.

Patented Mar. 21, 1916.

5 SHEETS-SHEET f).

ROG/M190 VHPOR INLET STEAM? M 1. ET

: mews mpii e, residingin Chiook and Sta-te of Illihejt einvented A ewandjiisefnhllm- (ivernentin Appamtu Tor; Recovering Hyi? which o, in the eoi'lnty o roczirbonsflfromj lemming-'1 h on wi i pe ifica on h nve fi e elate t he-hy tion will rams; is equally @erw eerm ne Briefly ontl roembons mend espeeie ll oinelog les zfroni the dry 1 11mm c' r; @i enzel m1 its {distillatidnfi i by Passi l h which 1 they, anej pa arebi'iou ght'in ebs fli ig ei i i hughpoolr contact j with benz ole eonstiti [Siaecification ofIiettere Patent.

A ihl iceitionfi led October 20, 1913. sen-aim. 79 ,130.

need I i V 7i The inventio" furthermoie'eonsists inthe ir stilliition atn 'elgeesqfltionsflof the part iend' devices as herein shown, described o fc'laixnecl.

flappaifatus n Y Q} el g us a1? dei to odj flbyi thosel -fview"of an, apparatus embodyinglmy im- I provenients, "the 'etill, vi hieh is of column type, being shown in Section and. the other partsin elevation'yandFigfi is ajlongitudinal f'sectionel View showing diagi'ammeticall y H I the'genei'a1' ell-known oonst1-ueti0n of the .ee'es of distiUa "'heat exchangers, superheaters and condensioniifi omfcogl or other fuel Eisuas followsfi v firstjcooledftof A the geletionsfianti construction of the ele- GlWeS -R f I 85 walls of venous heating 010 gees} are e apparatus for,

emi -1 PATENT eneien fli'ilrlin'oxeessmnon, BY MESNE Ass zemmms, T 3:. KO PIf EQ S eomgenxxn eo zrone'r on OF PENNSYLVANIA.

m tvmm HYDROCARBONS FROM ABSORBING-OILS.

Patented M31221; 191 e.

I .1 tillation of the hydrocarbons, is very great ANLPfiNINQRaLSUband economical operation. necessitates as much conservation of this heat as possible.

The main objects of iny invention, therefore, are, to provide eneppamtus for the purpose abovedeec ribedwhich will insure the recovery Orion-serve we; as mueh of u 6i the Wash pgfe de n epparatus (3 ill permit of J'repeirs or ose parts siibjectecl to parts and devices! and-in the novel combine I In; "the?drawing fforming -a' part of'this specifieetlon, F gure 1s a "dlagrammatic nients iindicatefd in 1 mt 4p and. cooling units fbi oke'ngawaygtq expose annore dearly the inndqwhieh, byf' ternal it1'1aingem'ei1t, and with a considerahle Wportion of the upper part bf the column biokenc away to accommodate it to the ,7 -ispaeexevei-lable on'the sheet for enlarged illustration of the other elements or units in the eppari tus; Fig; is 5/ horizontal seetionztl View of theqheatexehanger A, and also serves' tdillus'trate thegeneral construc- W tion ofthe heet exehanger .-B:*'and the heat exchanger or eoolep G and {the colors G l ,andrG and E,' except*thet the eaidilnits B I ane hG end G eiid also with inlets;

G? we severally provided unitO illustrated in Fig. 7; Fig. is an end View of the same unit C, as seen in Figs. 1 0

deutletsffor wr ter for cooling-(as indicated in Fig.:'3);;]3ig, 5 is a Foo ' and 3; Fig. 10 is a vertical transverse secverticalsectiona'l' view of the column, which tional view of the same unit C; Fig. 11 is a constitutes the still indicated in Fig. 1; Fig. 12 is a section on the line XII XII of .Fig. 11; and Fig. 13' is a section 'on the line ,XIII-XIIIofFig. 11.

Like reference numerals indicate like parts in the various figures.

The cold wash oil whichis enriched with the hydrocarbons is pumped from the washers, above mentioned, through the pipe 10 into the first heat exchanger or preheater A, Fig. 3. In'passingthrough this heat exchanger, the wash oil is given its first or preliminary heating by the vapors from the column as will'be hereinafter described, it

' being understood that the heat exchanger A is in the form of "an ordinary condenser or tank having horizontally arranged tubes or flues as will appar'hereinafter, and as more particularly illustrated in Figs. 4, and 6, in which the general fiow of the wash oil, around the usual well known arrange.- ment' of battles, and between the pipes that themselves serve as baflies, is indicated by a rrows. After passing through the heat exchanger A, the wash oil is then conducted by a pipe ll to a second "heat exchanger or preheater B and in passing therethrough is of a horizontally arranged condenser. This andfmore particularly shown in Fig. 3, and is of the general construction of the heatv exchanger unit A illustrated in Figs. 4, 5 and- L6 except that it is additionally provided with the water inlet and outlet '26, 26' controlledby suitable cocks, tofpermit the said heat exchanger B to be used asa cooler for thet wash oil from the column if underany' circumstances the wash oil; going to the columnv shouldbe passed through-the unit G (instead'of B), and preheated only in the i 'units A and C or, C". After passing through substantially .the'same construction as the theheat exchanger. Bthe heated oil is next conducted through thepipe 13 to a superheater C, Figs. 7-10, the latter being: of

heat exchangers A and B with the exceptions-that thetubes therein. do not entirely fill the tank but terminate. below' the top thereofso as to providea chamber a for-the ,1, collection of the developed vapors above the that said superheater O is supplied 'withlive steamj through the pipe connectionsgthe r paising,diffhrough outlet le, aft r hav- 1 0 ed backiand forth through the pipe top of the I level-of the liquidtherein, and

steam J'entering through the inlet 14 and wituinthe said unit-C, as indicated in Figs. 7,}, 9 and In the superheater C, the' wash oil is heated to approximately 266 F.

thus causing the vaporization or distillation ofpart of the hydrocarbons, which part is conducted through the pipe to the upper section of the column 'D.- In this superhe'ater C the vapor given off from the'highlyheated .wash. oil-is raised to a suflieiently I high temperature to maintain it in vaporous condition when'it passes off through the long pipe 15 and into the upper portion of the column, compensating the reduction-of temperature resulting from the radiation of heat necessarily incident tosuch flow through the pipe connection and outflow into the interior of the column; and the wash oil flowing, from the said superheater G is alsoraised to a high enough temperafture to compensate the loss of heatincident to its subsequent flow through the pipe conneg-tions" to the column and down through the system of drip pans and baflles within the c0lumn,-With the further result that the live steam injected into and flowing up through the column gives up its heat'substantially only-to effect the distillation of thebhydrocarbons rather-than to maintain or augment the temperature that is required to be maintained in the wash oil and vapor that have passed into the column from the unit C. The superheated wash oil, after passingthrough th'e superheaten C, is coa 3 ducted by branch'ipipe 1'6 and pipe 17 to the top part of the lower sectionof the column. The now very hot wash oil in pass 'ing down to the bottom of the, column over the drip pans, which are of well-known construction, will give up all ofits absorbed hydrocarbons on account of the steam which enters the column at the bottom thereof,

through the pipe 18 and which fiows up wardly through the column in a counter,

direction to that of the down-flowing oil.

The general mannerof flow of the steam injected into the column is indicated by the arrows in Fig. 11;. and-the descendin oil,

from which the hydrocarbon vapor is. ing distilled, passes downward, in reverse direction, by'the same general-course, through and horizontal bafiles in the column. The

I hydrocarbon vapors thus formed rise and mingle. with those whichare "conducted .to

the column through the pipe 15 an'd all' are .the aperturesin and around the drip'pans drawn. off. mixed withi-the-steam through a pipe 'l9xwhich conducts the heated vapors to the first heat-exchanger The vapors in=passing through the latteri-will heat the "Wash oil, as previously described, and most of thevaporsj will be condensed in this heat exchaflger. The vapors which; remain. un

condensed .and the {condensates}pass frbm the heatexchanger A-through a pipe 20 (as 'indicatiilfmore y rticularly 'in Figs; *3, l and 5) to a cooler or condenser E which is cooled-W water introduced through pipe the connec:

est iron; as is o danger of orf repairs rough the outlet pipe condensation of the tiected ifn the cooler E water and recovered onductedl through pipe the water and grayityg the gh a-pipe 23 {after which are lract ionated dthe Water separrangernent" oi? the oref particularly h enniits has issl'ioWn gs Gt, 5 and 6, litionally proe 1nlett26 and out- 'dnnitf to he used as tronijthe column the column is The units o 1 9; toythecolnnm, ded only on the las will scribed Whatl now Q cations and arran is used as a water cooler for the heated oil coming from the column and heat ex I changer B) may be substituted for the heat exchanger B by opening and closing the proper valves, as Will-be understood. In caserof a failure or breakdown in the heat exchanger A, thecooler G will be used in conjunction with the heat exchanger B and operated in parallel'or in series therewith :(as above mentioned and as indil 'ted in is; 3). Inthis case, the vapors from the column will he condensed in the cooler E instead of in the heat exchanger A as ordijnai ly. Other oil coolers G and G are provided to cool the oil from the column to a low enough temperature so that when the oilis forced through the washers (hereinbefore referred to) the oil will easilyabsorb tion, the cooled oil being conducted to said Washer through the pipe a Ordinarily, the oil coolers G, l and G are water cooled bynieans ot the water in troduced through pipes 26 and passing off through pipes 26, but when the cooler G is used to take the place of either of the heat exchangers A or B, ater will not be used in such substitute unit, but the exchange of heat Will be from oil to oil.

In 2 is illustrated roughly one of the heat exchangers; the same as shown coin-1 prising a horizontal tank 27, having cham r hers 1:28 at each end thereof crown sheets 29 a and horizontally extending straight tubes or' fines 30. r Inle'ts and outlets for one of the mediums passing through the tank are shown at 31., 31 and the outlets and inlets for the other a medium which circulates around the tubes or lines are shown at 32, 32. As before indicated; the super-heaters C; C are constructed in the same manner as i a the heat exchangers with theexception that a vapor chamber is provided. And the coolers E, G, (l andG? are also constructed similarlyto the heat exchangers :A and B. As awe have also before indicated; the. cooler G is constructed in the same manner as the heat eXcha'nger unit A illustrated in Figs. and (3. except for the provisionof the supplementary Water inlet and outlet 26, 26: and the coolers G and G for thefinal 1 outflowof the wash oil from thecolumn, are

- I constructed in the same manner asthe cooler G or heat exchanger B except'for the omission of the connections and inlet and outlet for We sh oil flowing toWardth column? and the condensate cooler E hasthe saine con struction as either of the coolers G or G he apparentnpon inspection "of it Although I have herein shown and deconsider the preferred improvements, yet as zit-2 5 embodiment of in Will be understood v their drocarbons vfrom the ases of distillaanions changes, rnoolifi gen ents o'zt parts may belso 1 i made without departing from the spirit of the invention, and all such changes, modifi- Z cations and arrangements are contemplated as come within the scope of the claims appended hereto.

I claim f 1. An apparatus for distilling hydr'ocarbons from an absorbing oil, which'includes, 1n combination: a still; a heat exchanger through which the oil isfirst passed, said heat exchanger being heated by vapors from the still; a second heat exchanger through which the oil is passed, said second heat exchanger being heated by hot oil from the still; a 'superheater through which the oil ispassed after leaving said second heat exchanger, said super-heater being steam heated; a cooler in communication with the first named heat exchanger; and pipe conne'ctions between said parts all so arranged that the vapors and heated oils are conducted separatelyfrom the superheater to the still and vapors from the latter through the first "heat exchanger. and the condensates from the latter to the cooler, substantially as specified; g

2. :An apparatus for the continuous distillation of hydrocarbons from an absorbing "oil, which includes a still, a heat exchanger,

a superheater, a cooler, and connections be-- tween said parts arranged .to conduct the oil first through the heat exchanger and through the superheater and from the latter to thestill and the vapors from the superheater to the still and the vapors from the still to the heat exchanger and, the condensatesgfrom the latter to the cooler, said heat exchanger, superheater and cooler each compris ng a horizontally disposed tan'k having straight tubes therein, substantially as speci fied.'.'T.;*, 3. An apparatus for the distillation of hydrocarbons from' an absorbing oil, which includes, in combination: a still; two heat exchangers arranged in'serles, theifirst of which is heated by vapors from the still and-.. the: secondis heated by. oil from the st1ll;;a-

superhea ter to which-the oil is conducted from sa d second named heat exchanger,'said superheater being steam heated; and a second superheater arranged-in parallel with the first named superheater whereby either superheater may beinterchangeably used to permit of repairs without shuttingdown the apparatus, substantially asspecified.

4. An apparatus for the continuous distillation of hydrocarbons from -absorbing oil, which includes, in combination: a still; two heat exchangers arranged in series, the first being heated by vapors from the still and the secondbeing heated by oil from the still; a third heat exchanger arranged to be 3 substituted for either of the first two heat exchangers; a superheater, said superheater being" steam heated; pipe connections between said second and third named heat exchangers adapted to conduct 'the oil to the superheater; and pipe connections from theF,

superheater to the still adapted to separately conduct the heated oil and the vapors thereto, substantially as specified. w

5. An apparatus for the continuous dis-- tillation of hydrocarbons from an absorb- .ing oil, which includes a still, a heat exchanger heated by vapors from the still, a superheater heated'by: steam, said superheater having a chamber at the top thereof adapted to collect the developed vapors oil is-passed first throughone heat exchanger, then through' the second heat exchanger, then through the "su'perheater'a'nd from the latter to the still, and connections from the still to the heat exchangers so arranged that the first heat, exchanger "is heated by vapors from the still and the second heat exchanger is heated by oil therefrom, substantially as specified.

An apparatus for the continuous distillation vof hydrocarbons from 'an absorb- 'ing oil, Which'includes', in combination: a I

still; a heat exchanger A heated by vapors "from the still; a heat exchanger'B heated by oil from the still;-a steam heated superheater C, the latter being incommunication with the heat exchanger B and from which it'receives the oil, said superheaterhaving a vapor chamber 0 in communication with the still and having also another -connection 7 with the still'for-the heated oil; and a watercooled cooler E adapted to receive theconstantially as specified.

8. An apparatus forthe continuous distillation of hydrocarbons from absorbing oil, which includes, in combination: a still;-

a heat exchanger, arranged to be heated by vapors from the still; a superheater connectediii series with said heat exchanger, said .siiperheater being steam'heated; a second super-heater connected by pipe connections so as to be arranged either in series or in parallel with the first superheater, said second named superheater being steam heated; and connections from. the superheaters to the still adapted to convey the developed vapors from the superheaters to the still,

substantially as specified.

9. An apparatus for continuous distillation of hydrocarbons from arrabsorbing oil.

densates from the heat exchanger .A, subv which includes,ain combination; a still; a

succession of heaters for heating the oil,

first, by the vapors leaving the still, second,

by the hotoil leaving the still, and then, by

live steam; the heaters being so interconnected that such heater units are adapted to be interchanged to permit repair and 'replacement without disturbing the operation of the system; and connections for conveying the oil successivelythrough the heaters to the still, andtfor conveying the vapors and the hot oil from the still to the respective vapor-heated and oil-heated heaters, and

tion of hydrocarbons from an absorbing oil,

for conducting live steam to the steamheated heaters; substantially as specified.

10. .An apparatus for continuous distillawhich includes, in combination: a still; a succession of horizontally disposed heaters,

fitted with substantially straight standard tubes, for heating the oil, first, by the vapors leaving the still, second, by the hot oil leaving the still, and then, by live steam; the heaters being so interconnected that such heater units are adapted to be interchanged to permit repair and replacement Without disturbing the operation of the system; and. connections for conveying the oil successively through the heaters to the still, and for conveying the vapors and the hot oil from the still to the respective vapor-heated and oil-heated heaters, and for conducting live steam to the steam-heated heaters; sub stantially as specified.

Signed this 17th day of October, 1913, in the presence of two Witnesses.

' v FRANZ PUNING. Witnesses:

WILLIAM A. GEIGER, JosEPH HARRIS. 

